A New Internet-Draft is available from the on-line Internet-Drafts
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Title : LC-PCN: The Load Control PCN Solution
Author(s) : L. Westberg, et al.
Filename : draft-westberg-pcn-load-control-02.txt
Pages : 35
Date : 2007-11-15
There is an increased interest of simple and scalable resource
provisioning solution for Diffserv network. The Load Control PCN
(LC-PCN) addresses the following issues:
o Admission Control for real time data flows in stateless Diffserv
Domains
o Flow Termination: Termination of flows in case of exceptional
events, such as severe congestion after re-routing.
Admission control in a Diffserv stateless domain is a combination of:
o Probing, whereby a probe packet is sent along the forwarding path
in a network to determine whether a flow can be admitted based
upon the current congestion state of the network
o Admission Control based on data marking, whereby in congestion
situations the data packets are marked to notify the PCN-egress-
node that a congestion occurred on a particular PCN-ingress-node
to PCN-egress-node path.
The scheme provides the capability of controlling the traffic load in
the network without requiring signaling or any per-flow processing in
the PCN-interior-nodes. The complexity of Load Control is kept to a
minimum to make implementation simple.
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